content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * -----------------
   * HistogramBin.java
   * -----------------
   * (C) Copyright 2003-2008, by Jelai Wang and Contributors.
   *
   * Original Author:  Jelai Wang (jelaiw AT mindspring.com);
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * Changes
   * -------
   * 06-Jul-2003 : Version 1, contributed by Jelai Wang (DG);
   * 07-Jul-2003 : Changed package and added Javadocs (DG);
   * 01-Mar-2004 : Moved from org.jfree.data --> org.jfree.data.statistics (DG);
   * ------------- JFREECHART 1.0.x ---------------------------------------------
   * 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG);
   *
   */
  
  package org.jfree.data.statistics;
  
  import java.io.Serializable;
  
  /**
   * A bin for the {@link HistogramDataset} class.
   */
  public class HistogramBin implements Cloneable, Serializable {
  
      /** For serialization. */
      private static final long serialVersionUID = 7614685080015589931L;
  
      /** The number of items in the bin. */
      private int count;
  
      /** The start boundary. */
      private double startBoundary;
  
      /** The end boundary. */
      private double endBoundary;
  
      /**
       * Creates a new bin.
       *
       * @param startBoundary  the start boundary.
       * @param endBoundary  the end boundary.
       */
      public HistogramBin(double startBoundary, double endBoundary) {
          if (startBoundary > endBoundary) {
              throw new IllegalArgumentException(
                      "HistogramBin():  startBoundary > endBoundary.");
          }
          this.count = 0;
          this.startBoundary = startBoundary;
          this.endBoundary = endBoundary;
      }
  
      /**
       * Returns the number of items in the bin.
       *
       * @return The item count.
       */
      public int getCount() {
          return this.count;
      }
  
      /**
       * Increments the item count.
       */
      public void incrementCount() {
          this.count++;
      }
  
      /**
       * Returns the start boundary.
       *
       * @return The start boundary.
       */
      public double getStartBoundary() {
          return this.startBoundary;
      }
  
      /**
       * Returns the end boundary.
       *
       * @return The end boundary.
       */
      public double getEndBoundary() {
          return this.endBoundary;
      }
  
      /**
       * Returns the bin width.
       *
       * @return The bin width.
       */
      public double getBinWidth() {
          return this.endBoundary - this.startBoundary;
      }
  
      /**
       * Tests this object for equality with an arbitrary object.
       *
       * @param obj  the object to test against.
       *
       * @return A boolean.
       */
      @Override
      public boolean equals(Object obj) {
          if (obj == null) {
              return false;
          }
          if (obj == this) {
              return true;
          }
          if (obj instanceof HistogramBin) {
              HistogramBin bin = (HistogramBin) obj;
              boolean b0 = bin.startBoundary == this.startBoundary;
              boolean b1 = bin.endBoundary == this.endBoundary;
              boolean b2 = bin.count == this.count;
              return b0 && b1 && b2;
          }
          return false;
      }
  
      /**
       * Returns a clone of the bin.
       *
       * @return A clone.
       *
       * @throws CloneNotSupportedException not thrown by this class.
       */
      @Override
      public Object clone() throws CloneNotSupportedException {
          return super.clone();
      }
  
  }
  